#define DEBUG_SUBSYSTEM S_LOG
-
#include "../include/obd_class.h"
#include "../include/lustre_log.h"
#include "llog_internal.h"
{
struct llog_handle *loghandle;
- OBD_ALLOC_PTR(loghandle);
- if (loghandle == NULL)
+ loghandle = kzalloc(sizeof(*loghandle), GFP_NOFS);
+ if (!loghandle)
return NULL;
init_rwsem(&loghandle->lgh_lock);
else if (loghandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
LASSERT(list_empty(&loghandle->u.chd.chd_head));
LASSERT(sizeof(*(loghandle->lgh_hdr)) == LLOG_CHUNK_SIZE);
- OBD_FREE(loghandle->lgh_hdr, LLOG_CHUNK_SIZE);
+ kfree(loghandle->lgh_hdr);
out:
- OBD_FREE_PTR(loghandle);
+ kfree(loghandle);
}
void llog_handle_get(struct llog_handle *loghandle)
llog_free_handle(loghandle);
}
-/* returns negative on error; 0 if success; 1 if success & log destroyed */
-int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle,
- int index)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- int rc = 0;
-
- CDEBUG(D_RPCTRACE, "Canceling %d in log "DOSTID"\n",
- index, POSTID(&loghandle->lgh_id.lgl_oi));
-
- if (index == 0) {
- CERROR("Can't cancel index 0 which is header\n");
- return -EINVAL;
- }
-
- spin_lock(&loghandle->lgh_hdr_lock);
- if (!ext2_clear_bit(index, llh->llh_bitmap)) {
- spin_unlock(&loghandle->lgh_hdr_lock);
- CDEBUG(D_RPCTRACE, "Catalog index %u already clear?\n", index);
- return -ENOENT;
- }
-
- llh->llh_count--;
-
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1) &&
- (loghandle->lgh_last_idx == (LLOG_BITMAP_BYTES * 8) - 1)) {
- spin_unlock(&loghandle->lgh_hdr_lock);
- rc = llog_destroy(env, loghandle);
- if (rc < 0) {
- CERROR("%s: can't destroy empty llog #"DOSTID
- "#%08x: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, rc);
- goto out_err;
- }
- return 1;
- }
- spin_unlock(&loghandle->lgh_hdr_lock);
-
- rc = llog_write(env, loghandle, &llh->llh_hdr, NULL, 0, NULL, 0);
- if (rc < 0) {
- CERROR("%s: fail to write header for llog #"DOSTID
- "#%08x: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, rc);
- goto out_err;
- }
- return 0;
-out_err:
- spin_lock(&loghandle->lgh_hdr_lock);
- ext2_set_bit(index, llh->llh_bitmap);
- llh->llh_count++;
- spin_unlock(&loghandle->lgh_hdr_lock);
- return rc;
-}
-EXPORT_SYMBOL(llog_cancel_rec);
-
static int llog_read_header(const struct lu_env *env,
struct llog_handle *handle,
struct obd_uuid *uuid)
llh->llh_hdr.lrh_type = LLOG_HDR_MAGIC;
llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len = LLOG_CHUNK_SIZE;
llh->llh_hdr.lrh_index = llh->llh_tail.lrt_index = 0;
- llh->llh_timestamp = get_seconds();
+ llh->llh_timestamp = ktime_get_real_seconds();
if (uuid)
memcpy(&llh->llh_tgtuuid, uuid,
sizeof(llh->llh_tgtuuid));
LASSERT(handle->lgh_hdr == NULL);
- OBD_ALLOC_PTR(llh);
- if (llh == NULL)
+ llh = kzalloc(sizeof(*llh), GFP_NOFS);
+ if (!llh)
return -ENOMEM;
handle->lgh_hdr = llh;
/* first assign flags to use llog_client_ops */
}
out:
if (rc) {
- OBD_FREE_PTR(llh);
+ kfree(llh);
handle->lgh_hdr = NULL;
}
return rc;
LASSERT(llh);
- OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
+ buf = kzalloc(LLOG_CHUNK_SIZE, GFP_NOFS);
if (!buf) {
lpi->lpi_rc = -ENOMEM;
return 0;
* swabbing is done at the beginning of the loop. */
for (rec = (struct llog_rec_hdr *)buf;
(char *)rec < buf + LLOG_CHUNK_SIZE;
- rec = (struct llog_rec_hdr *)((char *)rec + rec->lrh_len)){
+ rec = (struct llog_rec_hdr *)((char *)rec + rec->lrh_len)) {
CDEBUG(D_OTHER, "processing rec 0x%p type %#x\n",
rec, rec->lrh_type);
rc = lpi->lpi_cb(lpi->lpi_env, loghandle, rec,
lpi->lpi_cbdata);
last_called_index = index;
- if (rc == LLOG_PROC_BREAK) {
- goto out;
- } else if (rc == LLOG_DEL_RECORD) {
- llog_cancel_rec(lpi->lpi_env,
- loghandle,
- rec->lrh_index);
- rc = 0;
- }
if (rc)
goto out;
} else {
if (cd != NULL)
cd->lpcd_last_idx = last_called_index;
- OBD_FREE(buf, LLOG_CHUNK_SIZE);
+ kfree(buf);
lpi->lpi_rc = rc;
return 0;
}
struct llog_process_info *lpi;
int rc;
- OBD_ALLOC_PTR(lpi);
- if (lpi == NULL) {
+ lpi = kzalloc(sizeof(*lpi), GFP_NOFS);
+ if (!lpi) {
CERROR("cannot alloc pointer\n");
return -ENOMEM;
}
if (IS_ERR_VALUE(rc)) {
CERROR("%s: cannot start thread: rc = %d\n",
loghandle->lgh_ctxt->loc_obd->obd_name, rc);
- OBD_FREE_PTR(lpi);
+ kfree(lpi);
return rc;
}
wait_for_completion(&lpi->lpi_completion);
llog_process_thread(lpi);
}
rc = lpi->lpi_rc;
- OBD_FREE_PTR(lpi);
+ kfree(lpi);
return rc;
}
EXPORT_SYMBOL(llog_process_or_fork);
}
EXPORT_SYMBOL(llog_process);
-int llog_reverse_process(const struct lu_env *env,
- struct llog_handle *loghandle, llog_cb_t cb,
- void *data, void *catdata)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- struct llog_process_cat_data *cd = catdata;
- void *buf;
- int rc = 0, first_index = 1, index, idx;
-
- OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
- if (!buf)
- return -ENOMEM;
-
- if (cd != NULL)
- first_index = cd->lpcd_first_idx + 1;
- if (cd != NULL && cd->lpcd_last_idx)
- index = cd->lpcd_last_idx;
- else
- index = LLOG_BITMAP_BYTES * 8 - 1;
-
- while (rc == 0) {
- struct llog_rec_hdr *rec;
- struct llog_rec_tail *tail;
-
- /* skip records not set in bitmap */
- while (index >= first_index &&
- !ext2_test_bit(index, llh->llh_bitmap))
- --index;
-
- LASSERT(index >= first_index - 1);
- if (index == first_index - 1)
- break;
-
- /* get the buf with our target record; avoid old garbage */
- memset(buf, 0, LLOG_CHUNK_SIZE);
- rc = llog_prev_block(env, loghandle, index, buf,
- LLOG_CHUNK_SIZE);
- if (rc)
- goto out;
-
- rec = buf;
- idx = rec->lrh_index;
- CDEBUG(D_RPCTRACE, "index %u : idx %u\n", index, idx);
- while (idx < index) {
- rec = (void *)rec + rec->lrh_len;
- if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
- lustre_swab_llog_rec(rec);
- idx ++;
- }
- LASSERT(idx == index);
- tail = (void *)rec + rec->lrh_len - sizeof(*tail);
-
- /* process records in buffer, starting where we found one */
- while ((void *)tail > buf) {
- if (tail->lrt_index == 0) {
- /* no more records */
- rc = 0;
- goto out;
- }
-
- /* if set, process the callback on this record */
- if (ext2_test_bit(index, llh->llh_bitmap)) {
- rec = (void *)tail - tail->lrt_len +
- sizeof(*tail);
-
- rc = cb(env, loghandle, rec, data);
- if (rc == LLOG_PROC_BREAK) {
- goto out;
- } else if (rc == LLOG_DEL_RECORD) {
- llog_cancel_rec(env, loghandle,
- tail->lrt_index);
- rc = 0;
- }
- if (rc)
- goto out;
- }
-
- /* previous record, still in buffer? */
- --index;
- if (index < first_index) {
- rc = 0;
- goto out;
- }
- tail = (void *)tail - tail->lrt_len;
- }
- }
-
-out:
- if (buf)
- OBD_FREE(buf, LLOG_CHUNK_SIZE);
- return rc;
-}
-EXPORT_SYMBOL(llog_reverse_process);
-
-/**
- * new llog API
- *
- * API functions:
- * llog_open - open llog, may not exist
- * llog_exist - check if llog exists
- * llog_close - close opened llog, pair for open, frees llog_handle
- * llog_declare_create - declare llog creation
- * llog_create - create new llog on disk, need transaction handle
- * llog_declare_write_rec - declaration of llog write
- * llog_write_rec - write llog record on disk, need transaction handle
- * llog_declare_add - declare llog catalog record addition
- * llog_add - add llog record in catalog, need transaction handle
- */
-int llog_exist(struct llog_handle *loghandle)
-{
- struct llog_operations *lop;
- int rc;
-
- rc = llog_handle2ops(loghandle, &lop);
- if (rc)
- return rc;
- if (lop->lop_exist == NULL)
- return -EOPNOTSUPP;
-
- rc = lop->lop_exist(loghandle);
- return rc;
-}
-EXPORT_SYMBOL(llog_exist);
-
-int llog_declare_create(const struct lu_env *env,
- struct llog_handle *loghandle, struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(loghandle, &lop);
- if (rc)
- return rc;
- if (lop->lop_declare_create == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_declare_create(env, loghandle, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_create);
-
-int llog_create(const struct lu_env *env, struct llog_handle *handle,
- struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
- if (lop->lop_create == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_create(env, handle, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_create);
-
-int llog_declare_write_rec(const struct lu_env *env,
- struct llog_handle *handle,
- struct llog_rec_hdr *rec, int idx,
- struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
- LASSERT(lop);
- if (lop->lop_declare_write_rec == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_declare_write_rec(env, handle, rec, idx, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_write_rec);
-
-int llog_write_rec(const struct lu_env *env, struct llog_handle *handle,
- struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
- int numcookies, void *buf, int idx, struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc, buflen;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
-
- LASSERT(lop);
- if (lop->lop_write_rec == NULL)
- return -EOPNOTSUPP;
-
- if (buf)
- buflen = rec->lrh_len + sizeof(struct llog_rec_hdr) +
- sizeof(struct llog_rec_tail);
- else
- buflen = rec->lrh_len;
- LASSERT(cfs_size_round(buflen) == buflen);
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_write_rec(env, handle, rec, logcookies, numcookies,
- buf, idx, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_write_rec);
-
-int llog_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
- void *buf, struct thandle *th)
-{
- int raised, rc;
-
- if (lgh->lgh_logops->lop_add == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lgh->lgh_logops->lop_add(env, lgh, rec, logcookies, buf, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_add);
-
-int llog_declare_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct thandle *th)
-{
- int raised, rc;
-
- if (lgh->lgh_logops->lop_declare_add == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lgh->lgh_logops->lop_declare_add(env, lgh, rec, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_add);
-
-/**
- * Helper function to open llog or create it if doesn't exist.
- * It hides all transaction handling from caller.
- */
-int llog_open_create(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_handle **res, struct llog_logid *logid,
- char *name)
-{
- struct dt_device *d;
- struct thandle *th;
- int rc;
-
- rc = llog_open(env, ctxt, res, logid, name, LLOG_OPEN_NEW);
- if (rc)
- return rc;
-
- if (llog_exist(*res))
- return 0;
-
- LASSERT((*res)->lgh_obj != NULL);
-
- d = lu2dt_dev((*res)->lgh_obj->do_lu.lo_dev);
-
- th = dt_trans_create(env, d);
- if (IS_ERR(th)) {
- rc = PTR_ERR(th);
- goto out;
- }
-
- rc = llog_declare_create(env, *res, th);
- if (rc == 0) {
- rc = dt_trans_start_local(env, d, th);
- if (rc == 0)
- rc = llog_create(env, *res, th);
- }
- dt_trans_stop(env, d, th);
-out:
- if (rc)
- llog_close(env, *res);
- return rc;
-}
-EXPORT_SYMBOL(llog_open_create);
-
-/**
- * Helper function to delete existent llog.
- */
-int llog_erase(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_logid *logid, char *name)
-{
- struct llog_handle *handle;
- int rc = 0, rc2;
-
- /* nothing to erase */
- if (name == NULL && logid == NULL)
- return 0;
-
- rc = llog_open(env, ctxt, &handle, logid, name, LLOG_OPEN_EXISTS);
- if (rc < 0)
- return rc;
-
- rc = llog_init_handle(env, handle, LLOG_F_IS_PLAIN, NULL);
- if (rc == 0)
- rc = llog_destroy(env, handle);
-
- rc2 = llog_close(env, handle);
- if (rc == 0)
- rc = rc2;
- return rc;
-}
-EXPORT_SYMBOL(llog_erase);
-
-/*
- * Helper function for write record in llog.
- * It hides all transaction handling from caller.
- * Valid only with local llog.
- */
-int llog_write(const struct lu_env *env, struct llog_handle *loghandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- int cookiecount, void *buf, int idx)
-{
- struct dt_device *dt;
- struct thandle *th;
- int rc;
-
- LASSERT(loghandle);
- LASSERT(loghandle->lgh_ctxt);
- LASSERT(loghandle->lgh_obj != NULL);
-
- dt = lu2dt_dev(loghandle->lgh_obj->do_lu.lo_dev);
-
- th = dt_trans_create(env, dt);
- if (IS_ERR(th))
- return PTR_ERR(th);
-
- rc = llog_declare_write_rec(env, loghandle, rec, idx, th);
- if (rc)
- goto out_trans;
-
- rc = dt_trans_start_local(env, dt, th);
- if (rc)
- goto out_trans;
-
- down_write(&loghandle->lgh_lock);
- rc = llog_write_rec(env, loghandle, rec, reccookie,
- cookiecount, buf, idx, th);
- up_write(&loghandle->lgh_lock);
-out_trans:
- dt_trans_stop(env, dt, th);
- return rc;
-}
-EXPORT_SYMBOL(llog_write);
-
int llog_open(const struct lu_env *env, struct llog_ctxt *ctxt,
struct llog_handle **lgh, struct llog_logid *logid,
char *name, enum llog_open_param open_param)
return rc;
}
EXPORT_SYMBOL(llog_close);
-
-int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
- char *name)
-{
- struct llog_handle *llh;
- int rc = 0;
-
- rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
- if (rc < 0) {
- if (likely(rc == -ENOENT))
- rc = 0;
- goto out;
- }
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_close;
- rc = llog_get_size(llh);
-
-out_close:
- llog_close(env, llh);
-out:
- /* header is record 1 */
- return rc <= 1;
-}
-EXPORT_SYMBOL(llog_is_empty);
-
-int llog_copy_handler(const struct lu_env *env, struct llog_handle *llh,
- struct llog_rec_hdr *rec, void *data)
-{
- struct llog_handle *copy_llh = data;
-
- /* Append all records */
- return llog_write(env, copy_llh, rec, NULL, 0, NULL, -1);
-}
-EXPORT_SYMBOL(llog_copy_handler);
-
-/* backup plain llog */
-int llog_backup(const struct lu_env *env, struct obd_device *obd,
- struct llog_ctxt *ctxt, struct llog_ctxt *bctxt,
- char *name, char *backup)
-{
- struct llog_handle *llh, *bllh;
- int rc;
-
-
-
- /* open original log */
- rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
- if (rc < 0) {
- /* the -ENOENT case is also reported to the caller
- * but silently so it should handle that if needed.
- */
- if (rc != -ENOENT)
- CERROR("%s: failed to open log %s: rc = %d\n",
- obd->obd_name, name, rc);
- return rc;
- }
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_close;
-
- /* Make sure there's no old backup log */
- rc = llog_erase(env, bctxt, NULL, backup);
- if (rc < 0 && rc != -ENOENT)
- goto out_close;
-
- /* open backup log */
- rc = llog_open_create(env, bctxt, &bllh, NULL, backup);
- if (rc) {
- CERROR("%s: failed to open backup logfile %s: rc = %d\n",
- obd->obd_name, backup, rc);
- goto out_close;
- }
-
- /* check that backup llog is not the same object as original one */
- if (llh->lgh_obj == bllh->lgh_obj) {
- CERROR("%s: backup llog %s to itself (%s), objects %p/%p\n",
- obd->obd_name, name, backup, llh->lgh_obj,
- bllh->lgh_obj);
- rc = -EEXIST;
- goto out_backup;
- }
-
- rc = llog_init_handle(env, bllh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_backup;
-
- /* Copy log record by record */
- rc = llog_process_or_fork(env, llh, llog_copy_handler, (void *)bllh,
- NULL, false);
- if (rc)
- CERROR("%s: failed to backup log %s: rc = %d\n",
- obd->obd_name, name, rc);
-out_backup:
- llog_close(env, bllh);
-out_close:
- llog_close(env, llh);
- return rc;
-}
-EXPORT_SYMBOL(llog_backup);
Code Review / kvmfornfv.git / blobdiff